Perhaps you should try some spelling variations:
"donauschwabisches christentum nr. 23" » "donauschwabisches schrifttum nr. 23" (Expand Search), "dopnauschwabisches schrifttum nr. 23" (Expand Search), "donauschwabisches christentum der. 23" (Expand Search)
"donauschwabisches christentum eine. 23" » "donauschwabisches schrifttum eine. 23" (Expand Search), "dopnauschwabisches schrifttum eine. 23" (Expand Search), "donauschwabisches christbaum eine. 23" (Expand Search), "donauschwabisches christentum der. 23" (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("donauschwabisches christentum nr. 23") OR ("donauschwabisches christentum eine. 23"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"donauschwabisches christentum nr. 23\") OR (\"donauschwabisches christentum eine. 23\"))".
• Removing quotes may allow a broader search: (( donauschwabisches christentum nr. 23 ) OR ( donauschwabisches christentum eine. 23 )).
• Adding a wildcard symbol may retrieve word variants: (("donauschwabisches christentum nr. 23") OR ("donauschwabisches christentum eine. 23"))*.